Humidifier



FIG. 1 is a perspective view of a humidifier of the new design;

FIG. 2 is a top plan view of the humidifier of FIG. 1;

FIG. 3 is a bottom plan view of the humidifier of FIG. 1;

FIG. 4 is a front elevational view of the humidifier of FIG. 1;

FIG. 5 is a left side elevational view of the humidifier of FIG. 1;

FIG. 6 is back elevational view of the humidifier of FIG. 1; and,

FIG. 7 is right side elevational view of the humidifier of FIG. 1.

The portions of the Figures shown in broken lines are not part of the claimed design and are for illustration only. 

CLAIM The ornamental design for a humidifier, as shown and described. 